#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<ctype.h>
int main()
{
	char arr[] = "I Am A Student";
	int i = 0;
	while (arr[i])
	{
		if (islower(arr[i]))
		{
			arr[i] = toupper(arr[i]);
			
		}
		putchar(arr[i]);
		i++;
		
	}
	printf("\n");
	i = 0;
	while (arr[i])
	{
		if (isupper(arr[i]))
		{
			arr[i] = tolower(arr[i]);

		}
		putchar(arr[i]);
		i++;

	}
	//printf("%s", arr);

	return 0;
}